Abstract: Certain embodiments of the present application relate to an unmanned aerial vehicle including a control system, at least one rotor, a line, and a load sensor. The load sensor includes an actuating arm engaged with the line, and the load sensor is operable to detect a loaded/unloaded state of the line based on a position of the actuating arm. The line places the actuating arm in a depressed position when a parcel is supported by the line to thereby indicate the loaded/unloaded as a loaded state. The line permits the actuating arm to adopt a projected position when the parcel is not supported by the line to thereby indicate the loaded/unloaded as a loaded state. The control system is configured to raise and/or lower the free portion of the line based upon the loaded/unloaded state of the line.

Abstract: A sterilization box for treating room air is described. The air drawn into the sterilization box is irradiated with UV radiation, such as is provided from UV LED chips. The air may be drawn into the sterilization box by under-pressure within the box created by fans at the exit ports of the box. The air may be drawn into a first chamber of the box where it is treated with one wavelength of UV radiation and then passed to a second chamber, where it is treated with a second wavelength of UV radiation. After the air is sterilized, it can be put back into the room or building in which the fixture is placed.

Abstract: A lighting fixture is disclosed with effective disinfection properties against bacteria, fungi, and viruses. The fixture includes a fan to continuously draw air into the light fixture. The air drawn in is irradiated with UV radiation within the fixture, such as is provided from UV LED chips. The relatively small volume of the light fixture allows the flux or energy density of the UV radiation to be made more intense. After the air is sterilized, it can be put back into the room or building in which the fixture is placed. The white light provided by white light LEDs in the fixture provides illumination, and can further provide significant emission peaks at 405 nm and 470 nm which is also useful to pathogen inactivation.

Abstract: A lighting fixture is disclosed with effective disinfection properties against bacteria, fungi, and viruses. The fixture includes a fan to continuously draw air into the light fixture. The air drawn in is irradiated with UV radiation within the fixture, such as is provided from UV LED chips. The relatively small volume of the light fixture allows the flux or energy density of the UV radiation to be made more intense. After the air is sterilized, it can be put back into the room or building in which the fixture is placed. The white light provided by white light LEDs in the fixture provides illumination, and can further provide significant emission peaks at 405 nm and 470 nm which is also useful to pathogen inactivation.

Abstract: A lighting fixture is disclosed with effective disinfection properties against bacteria, fungi, and viruses. The fixture includes a fan to continuously draw air into the light fixture. The air drawn in is irradiated with UV radiation within the fixture, such as is provided from UV LED chips. The relatively small volume of the light fixture allows the flux or energy density of the UV radiation to be made more intense. After the air is sterilized, it can be put back into the room or building in which the fixture is placed. The white light provided by white light LEDs in the fixture provides illumination, and can further provide significant emission peaks at 405 nm and 470 nm which is also useful to pathogen inactivation.